USB charger



FIG. 1 is a front, left, bottom perspective view of a USB chargershowing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines present in the drawings are included for the purpose ofillustrating portions of the article which form no part of the claimeddesign.

CLAIM The ornamental design for a USB charger, as shown and described.